Feedback genuinely shapes what gets built next. Whatever brought you here, one of these should sort it:
Email momo@zaripov.dev and describe what happened — what you were doing, and what the app did instead. A screenshot helps more than you'd think. A human reads every one of these.
Tell us. The lesson pacing, the review rhythm, a word glossed oddly, copy that reads wrong — that is exactly the kind of thing worth an email: momo@zaripov.dev.
Everything you learn is stored on your phone, not on a server. Deleting the app deletes your progress with it. If you would like the anonymous session counts erased too, open Settings → Sharing, tap "Copy my ID", and email it to us.
If you signed in for Ask Momo, delete the account itself under Profile → Delete account. That doesn't cancel the subscription: do that in Settings → Apple Account → Subscriptions. The privacy policy has what goes where.
Momo is free, on iPhone: get it from the App Store. No account, no ads, and it works with no internet at all.